Brush



Feb. 26, 1929. 1,703,510

` J. A. CHARETTE I BRUSH Filed Jan. 20, 1928 IMI/ENTOR l JaJE/OH A. @HA/9577.5

ATTORNEY l Patented Feb. 26, 1929'.

Lussino PATENT OFFI y 4J'OSIEIE A. HABETTE, OF SOUTH ORANGE-NEW JERSEY.

BRUSH.

'Application med. January 2o, 192s. serial no. 248,029. l

rIhis invention relates to brush constructions and brush assemblies. Althoughthe invention is herein shown -in its application Y'to the construction ofbrushes for cleaning boiler tubes to remove incrustations and other accumulations it will be understobd that the invention is not restricted to the illustrated embodiment or uses but that 1t has wide utility in the brush art.

One of the objects of the invention 1s to provide a brush which may be cheaplyproduced and easily assembled.

Another object of the invention 1s to provide a brush-in which the bristles are prevented from dislocation by being clamped against each other so as to be held in place frictionally. t

, A further object of thev invent1on 1s to provide a brush in which the bristles extend transversel to the axis of the brush so that each end o every bristle forms a part of the brushing surface without the necessity for special shaping before assembling.

'One feature of 'the invention resides in ositioning brushing surface so that lthey extend radially of the brush and overlap at their mid points so as frictionally to engageeach other and prevent` their dislocation with respect to each other.

Another feature of the invention resides `in providing a plurality of sets of brushing elements positioned between retaining members and held in place by means of longitudinally extending securing members.

Other features and objects ofthe invention will be apparent'from the following description and drawings :which illustratel preferred embodiments of the invention.

Figure l is a sideview, part in section and part in elevation showing the arrangement p ofthe elements making up the brush;

Figure 2 is a sectional view taken on the line 2 2 of Figure 1; t i

Figure 3 is a view in elevation showing the manner in which several brushes may be used together; and f Figure 4 is a side view of a-modified form of brush with a portion of the bristles makingup the brush removed.

Ih the form of thepresent invention illustrated, groups of fibers, wire or any other suitable bristles 1 are positioned so that the overlap at their mid point, as shown in igure 2. Any desired number of sets of bristles arranged with the groups of each the bristles which form thet set positioned as shown may be provided. When thedesired number of bristles have been placed in this position annular disklike retaining members 2 are placed between the successive sets of bristles with the overlapping center portion of the bristles positioned in the center of the annular retaining member. A series of these sets of groups of bristles 1 and retaining members 2 is positioned as shown in Figure 1, having a common axis from which the bristles radiate, each bristle being positioned transversely to the axis of the brush and extending beyond the periphery. of the' retaining members.

` In order to secure the retaining members and bristles in place longitudinally-extending .securing members 3 are provided which pass through the retaining members at right angles to both the retaining members and the'bristles. The ends of the securing members 3 are fastened to head members 4 and 5 by being bent over as shown or by any suitable means such as a nut threaded onto the end of the securing member. The annular retaining members are .forced together and clamped upon the groups of .bristles before the securing means are permanently secured in place and since the retaining members engage the bristles at points where they do not overlap they may be brought sufficiently close together so that the bristles of each group forming 'a set of bristles between the of bristles may be spaced from each other, the arrangement in each case beingdependent-upon the use to which the brush is to be put. For example, if the brush is to. have a limited number of spaced bristles the retainingmembers should be thick but if the bristles should be closely arranged. on the brushing surface the, retaining 4members should 'be thinner.

The head Ymembers 4 and 5 arel `preferably constructed with threaded portions, the head 4 having a female thread 6 and head 5 having a stud 7 provided with a male thread so that a plurality of brushes may be secured to each other in axial alinement orJ a ing members' are relatively thick, the .sets

' 4f it is preferable to provide a disk-like plate 10 which is similar to the retaining members 2 except that the center portion of the plate is not stamped out. This plate may be suiiciently thin to be flexed as shown in Figure l, to allow for the overlapping portion of the groups of bristles or the member may be fstamped with ,adepression in its center to permit the bowed out portion of the overlapping bristles to be positioned properly in contact with its face.

VThe form of invention shown and described in Figures 1 and 2 ifs particularly adapted for use as a rotary brush for removing incrustations and deposits of material which may -have collected in pipes or boiler tubes; however, the brush const-ruction is adapted for use in many other forms and types of brushes and is particularly well'l suited for the construction of brushes which are to be subjected to longitudinal or rotary motion or subjected to severe usage.

When the brush'shown in Figures 1 and 2 is to be used for cleaning boiler tubes, it is ordinarily rotated about its axis byl any suitable means secured to one of thel threaded head members 4 or 5. Tf, however, it is desired to operate the brush merely by moving it axially and without rotation it may be desirablev to employ a plurality of brushes as shown in Figure 3, in which case the male head member would be threaded into the female head member of a second brush andthe longitudinal rows of bristles 12 of one brush displaced circumferentially from the longitudinal rows 13 of vbristles of the next or another brush. Thus, any material in the tube which passed between the parallelrows of bristles 12 of the first of these brushes would be engaged by the'ofs'et rows'of bristles 13 on another brush.

The form ofv brush shown in Figure 4 is similar in construction to that shown 1n Figures 1 and 2 with the exception that the groups of bristles in each succeeding set of bristles is. displaced circumferentially positioning the `longitudinally-extending securing members 3 at the desired angle to the retaining members 2 so that the groups :'of bristles are positioned in'spirallyl arranged longitudinal rows 15.`- With ,this construction the longitudinal rows of bristles may be ositioned so that when the brush is move lengthwise. without rota- -,tion succeeding portions of the longitudinal rows of bristleswill engage material lodged between the first groups of bristles as the brush is moved lengthwise. ln this way by meansof a single brush it is possible to remove all incrustations or dirt from` a boiler tube without requiring thev rotation.

of the brush; The particular angle at' maintain the necessary, strength to theA brush so that it may resist forces 'applied thereto.

If desired two or more brushes such as that-shown 1n Figure 4 may be arranged as shown-in Figure 3 with the spiral rows ofl bristles inclined in the same or opposite directions. Y

While various forms of brush construction embodying the present invention haver been shown and described it is not intended to limit the invention to any particular construction or arrangement of .parts except as defined inthe claims. `What is claimed as new is: v

l; A brush vcomprising retaining members, groups of bristles 'between said retaining members extending transversely to the axis of the brush and engaging with each other between their ends and projecting'beyond the periphery of said retaining members, so that each end of each bristle will forma part of the brushing surface, and means for flexing said bristle for preventing displacement of 4said bris les vwith respect to each other.

-2. A brush comprising a plurality of radially-extending groups of bristles positioned with the middle portions of the bristles overlapping and in contact with each other, and retaining means flexing said bristles for causing them' to frictionally engage each other toprevent their displacement.

3. A brush comprising a plurality of radially-extending bristles overlapping between'their ends, each end of said bristles 'forming a part ofthe brushing surface, and

means engaging said bristles at points where theydo not overlap for holding said bristles in position in said brush.

4. A brush comprisinga pluralit of sets of bristles forming' a brushing sur ace, said bristles extending through said brush transversely to the axis thereofand in contact vwith each other, retaining members between the successive sets of bristles, and means for forcing'. said retaining members into contact with saidk bristlesto prevent relative niovementthereof.

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5. A brush comprising head members, a

lurality of sets of brush forming bristles, ristles ofeach set being in contact with each otherandexten'ding transversely of theaxis CR Y of said head members and projecting beyond the periphery of said members, longitudinally-extending securing members located eccentrically with reference to said head members and between the bristles forming each set, and means between said sets of `bristles to prevent radial displacement there- -brush and rivets extending between said head members and at an angle less than a right angle to said bristles, said rivets being secured to said. head members and said retaining members.

8. A brush comprising a plurality of groups of bristles overlapping at their mid points, retaining members engaging said bristles at points where they do not overlap, said retaining members being spaced apart a distance less than the thickness of the overlapped bristles whereby said bristles are flexed and frictionally held against displacement.

9. A brush comprising a plurality of annular retaining members, a plurality of sets of bristles consisting 4of bristle groups extending transversely to said brush and said groups overlapping at the axis thereof', said retaining members being sufficiently thin to permit the overlapping portions of the groups of successive sets.' of bristles to engage with each other and means for securing said bristles and retaining members in place.

10. A brush comprising retaining niembers, a set of bristles consisting of bristle groups extending through the brush transversely to the axis thereof and beyond the periphery of said retaining members, another1 set of bristles similar thereto having groups displaced circumferentially from said first set of bristles, and means for securing said bristles against relative axial or circumferential movement.

11. A brush comprising retaining members, a group of bristles extendingl through the brush transversely to the axis thereof and beyond the periphery of said retaining members, anothergroup of bristles similar thereto displaced -circumferenti-ally from said rst group of bristles, and securing' members engaging said retaining members and, extending at an angle less than a right angle thereto to hold said bristles and re'- taining members in place.

12. A brush comprising a plurality of sets i members and bristles against relative move-` ment.

13. A brush comprising a plurality of sets of bristles, retaining members positioned between the successive sets of bristles and spirally arranged and longitudinally-ex-l tending securing members engaging said retaining members to secure said bristles in position in said brush.A

14:. A brush comprising a plurality of bristles extending through said brush transversely to the axis thereof and in contact with each other, retaining members engaging and flexing said bristles to frictionally retain them inposition, and longitudinallyextending securing members engaging said retaining'members.

15'. A brush comprising a plurality of groups of bristles extending through and overlapping to form the body of the brush, annular retaining members concentric with the body of the brush, said members being positioned on opposite sides of said groups of bristles and engaging said bristles outside the points of overlap, and means for holding retaining membersv on opposite sides of vsaid overlapping groups of bristles, said means engaging the retaining members and clamping the same against the bristles so that the brushing ends lor the dierent groups are iiexed substantially into a vcommon plane.

16. A brush comprising a` plurality of bristles overlapping mid-Way between their ends to form a group of radially-extending bristles having a central body portion, annular retaining members concentric with the body portion of said group of bristles and engaging opposite faces thereof outside the points of overlap, thebody of said group being received in the recesses ofy said members and the lfree ends of said bristles being brought substantially into'one plane by the pressure of .said members upon opposite faces of the group.

17. A brush comprising a plurality of sets of radially-arrangedl bristles overlapping at their middle portions to form the brush body, annular retaining members concentric with the body of the brush and located between adjacent sets of bristles and means pressing said members toward each other tol flex the portions of the bristles in each set, outside the overlap, substantially into a common plane.

18. A brush formed of a series of secmon plane and frictionally held against dis- 10 tions each comprising a plurality of groups placement, and means extending through of bristles overlapping at their mid points, said retaining members and between said centrally recessed retaining members engaggroups of bristles, said members clamping ing said bristles at points Where they do not said series of sections together to form a overlap, said retaining members being unitary structure having a commonaxis. 15

` spaced apart a distance less than thc thick- Signed at New York, N. Y., this 19th day ness ofthe overlapped-bristles'whereby said of January, 1928. bristles are flexed substantially into a com- JOSEPH A. CHARETTE. 

